This book is a contribution to the dialogue that is maintained today around the problems of education. The book contains four parts: (1) "In Search of the 21st Century School. Can the Colombian New School (EN) Show Us the Way?"; (2) "Experimentation with Self-Learning Materials in Two Schools in Conchali (Chile)"; (3) "Self-Learning Module for the Second Grade"; and (4) "Self-Learning Module for the Fourth Grade." The first part is divided into three section: (1) "Are the Countries of Latin America and the Caribbean Convinced That Quality Is the Primary Objective of Educational Development?"; (2) "An Attempt To Describe the EN Model"; and (3) "What Have We Learned about EN and What Are the Necessary Conditions for Replicating This Kind of Innovation?" (DK)